Switching itself power off Canopus twinpact 100

Canopus twinpact 100 working fine but suddnely face this problem Canopus twinpact 100 itself switching power off . then again power on & again itself power off with in one & half hour.
Please tell me what solution for this problem

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How did You connect Canopus? Canopus has 2 Firewire slots - on the back and on the front.
If You connect FW cable to a front slot, then, Canopus will not work. Only with external power supply. I´m offering the next proceeding:
1. Connect ADVC with FW cable 6 to 4 to Your macbook via back FW slot. The ADVC lights will now on. On front panel by default light is on mode "digital". If the light don't work - it's a Canopus problem. If light is up and working, then next step.
2. Go to apple menu-about this mac - more info - firewire. You MUST see here Your Canopus a a device. If so, go to the next step.
3. Connect Your VCR to analog inputs, on the front panel of Canopus.
4. Run FCE. If it says "apple firewire device is missing" then is something wrong with Canopus. If not, proceed to next step.
5. On the top of the front panel of Canopus, press button. The light changes from digital to analogue.
6. Press apple+8, then capture settings. Set the firewire device as uncontrollable device. Make sure that in capture window is "vtr ok". Turn the VCR on
7. Press the play button on capture window. In the window appears the screen of Your VCR. Then press play on VCR and then "capture now" on capture panel. Voila! Must to work.

Hi - The red light indicates the VHS is Macrovision copy protected, so the ADVC55 is refusing to import it.
There is a sort of "secret" workaround for this that most people who own the old Canopus products know, and which Canopus also knew, supported, and had posted on their forums (unfortunately deleted by the new owner who seems to be unclear on copyright law).
Remember, it is LEGAL to make ONE (but ONLY one) copy of any copyrighted material for your personal use for backup purposes. In other words, if you do this, you can record the movie into your computer and store it there, or burn it to a DVD (after which you must erase the copy on your computer), but that's all! You cannot make another copy for anyone else - not even yourself - without violating copyright law.
That said, here are the two procedures that usually work, easiest first:
1) When you first turn the Canopus on, hold the select button down for roughly twenty seconds. Now the system should ignore any copy protection until you turn the unit off.
2) (if 1 doesn't work:)
1. Put all dip switches OFF (unless you have a PAL system).
2. Hook up the firewire cable from the unit to the PC while ensuring that both units are OFF (this is what the instructions say to do, because you can cause a damaging power surge otherwise).
3. Turn on the power to the DVD player, PC and ADVC-100.
4. Set capture on your PC (your software) to Manual.
5. Start the DVD.
6. The ANALOG IN LCD of the unit will light, and if the DVD is Macrovision protected, the red STATUS light will stay on for about 18 seconds, turn off for about three seconds, and then repeat the process (or may remain red longer on some units).
7. Depress and HOLD the INPUT SELECT silver button. The DIGITAL IN LCD will light up temporarily then turn off. Keep this button depressed until the red STATUS light stays off completely (about 15 seconds).
8. Release the INPUT SELECT BUTTON and press it briefly one more time until the ANALOG IN button lights up.
9. Macrovision is now bypassed!
Again, once you turn the ADVC55 off (which you must - if it stays on for long periods it can overheat and malfunction), you'll have to go through the Macrovision bypass procedure again next time you turn it on.
Good luck, and I hope this works for you as it did for me with my Canopus!

this sounds like its a setting problem on your controll can you change the setting that says av try this its sounds like its not picking up the right signal check all wires are not damaged then try changing the settings in your menu options it is not a fault with the unti itself so dont worry to much as i dont have manuall for that model i cant tell you what settings to change ill have a look for manuall on net for you and will email if find anything what make and model of telly are you using ill email info to you if i find it sorry couldnt be any more help going to bed 10 past 1 in mornung here will look on net for manuall in morning hope this is some help to you sorry couldnt help tonight its late will email tomoz...............................................